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【单选题】
当工业机器人应用中,有多个相同的工件时,为方便示教,应创设()A.
关节坐标系
B.
直角坐标系
C.
工具坐标系
D.
工件坐标系
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】What happened to Ms. White after she was taken back to the store?
A.
She was questioned by the police.
B.
She was shut in a small room for 20 minutes.
C.
She was insulted by the shopper around her.
D.
She was body-searched by the store manager.
【单选题】What happened to Ms. White after she was taken back to the store?
A.
She was questioned by the police.
B.
She was shut in a small room for 20 minutes.
C.
She was insulted by the shoppers around her.
D.
She was body-searched by the store manager.
【单选题】下列关于肾上腺素和去甲肾上腺素对心血管作用的叙述，错误的是
A.
去甲肾上腺素有强烈的缩血管作用
B.
两者都可引起肝脏血管收缩
C.
肾上腺素使心率增加，心肌收缩力加强
D.
肾上腺素对总外周阻力影响不大
E.
去甲肾上腺素对β2肾上腺素能受体的作用比肾上腺素弱
【单选题】Why was the woman at the airport?
A.
She was sraveling on business.
B.
She was seeing the man off.
C.
She was leaving for Greece.
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